Work through this checklist from the top — steps 1–3 solve most cases:

  1. Check data roaming: is it enabled on the Coral eSIM line? (it's safe to turn on)
  2. Check the selected line: is Mobile Data set to "Coral eSIM"?
  3. Toggle Airplane Mode on and off to force a reconnect
  4. Restart your phone
  5. Select a network manually: turn off automatic carrier selection and try another local network
  6. Check APN settings: see our APN guide

OS-specific steps: "iPhone can't connect" / "Android can't connect". Still stuck? Contact support.